code: def test_return_type_input():
      img = make_image()
  
      # Case-insensitive
      with tv_tensors.set_return_type("tvtensor"):
          assert type(img + 3) is tv_tensors.Image
  
      with pytest.raises(ValueError, match="return_type must be"):
          tv_tensors.set_return_type("typo")
  
      tv_tensors.set_return_type("tensor")
  
imports: from copy import deepcopy
  import pytest
  import torch
  from common_utils import assert_equal, make_bounding_boxes, make_image, make_segmentation_mask, make_video
  from PIL import Image
  from torchvision import tv_tensors
label_desc: Use image node_id 23 for calling a global function with example usage: test_return_type_input() without return types